我现在正在学习在线 Web 开发课程,并且一直在构建一些网页来学习 HTML 和 CSS。在这个特别。我的问题是在页面中,来自我的 p 和 h3 元素类型样式规则的字体系列规则覆盖了来自特定 ID 选择器的字体系列规则。我能够通过链接选择器来解决这个问题,但我不明白为什么会发生这种情况。
这是我尝试格式化的 HTML 部分:
h3 {
font-family: Helvetica, sans-serif;
font-size: 24px;
}
p {
font-family: "Roboto", sans-serif;
}
.font-container {
display: inline-block;
width: 45%;
}
.caps {
text-transform: uppercase;
}
#helvetica{
font-family: Helvetica, sans-serif;
}
#roboto{
font-family: "Roboto", sans-serif;
}
#lora{
font-family: "Lora", serif;
}
<div class="container">
<h2>Fonts</h2>
<div class="font-container" id="helvetica">
<h3>Helvetica</h3>
<div class="normal">
<p>The quick brown fox jumps over the lazy dog.</p>
<p><em>The quick brown fox jumps over the lazy dog.</em></p>
<p><strong>The quick brown fox jumps over the lazy dog.</strong></p>
</div>
<div class="caps">
<p>The quick brown fox jumps over the lazy dog.</p>
<p><em>The quick brown fox jumps over the lazy dog.</em></p>
<p><strong>The quick brown fox jumps over the lazy dog.</strong></p>
</div>
</div>
<div class="font-container" id="roboto">
<h3>Roboto</h3>
<div class="normal">
<p>The quick brown fox jumps over the lazy dog.</p>
<p><em>The quick brown fox jumps over the lazy dog.</em></p>
<p><strong>The quick brown fox jumps over the lazy dog.</strong></p>
</div>
<div class="caps">
<p>The quick brown fox jumps over the lazy dog.</p>
<p><em>The quick brown fox jumps over the lazy dog.</em></p>
<p><strong>The quick brown fox jumps over the lazy dog.</strong></p>
</div>
</div>
<div class="font-container" id="lora">
<h3>Lora</h3>
<div class="normal">
<p>The quick brown fox jumps over the lazy dog.</p>
<p><em>The quick brown fox jumps over the lazy dog.</em></p>
<p><strong>The quick brown fox jumps over the lazy dog.</strong></p>
</div>
<div class="caps">
<p>The quick brown fox jumps over the lazy dog.</p>
<p><em>The quick brown fox jumps over the lazy dog.</em></p>
<p><strong>The quick brown fox jumps over the lazy dog.</strong></p>
</div>
</div>
使用 Chrome DevTools 检查表明此 div 中所有文本的字体系列都继承自 p 和 h3 规则。有人能解释一下为什么会这样吗?
答案 0 :(得分:0)
您需要为 h3
和 p tag
添加单独的 css
h3 {
font-family: Helvetica, sans-serif;
font-size: 24px;
}
p {
font-family: "Roboto", sans-serif;
}
.font-container {
display: inline-block;
width: 45%;
}
.caps {
text-transform: uppercase;
}
#helvetica,
#helvetica h3,
#helvetica p{
font-family: Helvetica, sans-serif;
}
#roboto,
#roboto h3,
#roboto p{
font-family: "Roboto", sans-serif;
}
#lora,
#lora h3,
#lora p{
font-family: "Lora", serif;
}
<div class="container">
<h2>Fonts</h2>
<div class="font-container" id="helvetica">
<h3>Helvetica</h3>
<div class="normal">
<p>The quick brown fox jumps over the lazy dog.</p>
<p><em>The quick brown fox jumps over the lazy dog.</em></p>
<p><strong>The quick brown fox jumps over the lazy dog.</strong></p>
</div>
<div class="caps">
<p>The quick brown fox jumps over the lazy dog.</p>
<p><em>The quick brown fox jumps over the lazy dog.</em></p>
<p><strong>The quick brown fox jumps over the lazy dog.</strong></p>
</div>
</div>
<div class="font-container" id="roboto">
<h3>Roboto</h3>
<div class="normal">
<p>The quick brown fox jumps over the lazy dog.</p>
<p><em>The quick brown fox jumps over the lazy dog.</em></p>
<p><strong>The quick brown fox jumps over the lazy dog.</strong></p>
</div>
<div class="caps">
<p>The quick brown fox jumps over the lazy dog.</p>
<p><em>The quick brown fox jumps over the lazy dog.</em></p>
<p><strong>The quick brown fox jumps over the lazy dog.</strong></p>
</div>
</div>
<div class="font-container" id="lora">
<h3>Lora</h3>
<div class="normal">
<p>The quick brown fox jumps over the lazy dog.</p>
<p><em>The quick brown fox jumps over the lazy dog.</em></p>
<p><strong>The quick brown fox jumps over the lazy dog.</strong></p>
</div>
<div class="caps">
<p>The quick brown fox jumps over the lazy dog.</p>
<p><em>The quick brown fox jumps over the lazy dog.</em></p>
<p><strong>The quick brown fox jumps over the lazy dog.</strong></p>
</div>
</div>
答案 1 :(得分:0)
#helvetica
, #lora
& #roboto
仅适用于 div
标签内没有 html 标签的任何字符。因为您用 h3 标签“包装”了 Helvetica,并且您有 h3 css 规则,它将替换适用于 #helvetica
标签的 div
规则。
看我的example
<div class="container">
<h2>Fonts</h2>
<div class="font-container" id="helvetica">
<h3>Helvetica</h3>
This text will inherit from #helvetica rules
<div class="normal">
<p>The quick brown fox jumps over the lazy dog.</p>
<p><em>The quick brown fox jumps over the lazy dog.</em></p>
<p><strong>The quick brown fox jumps over the lazy dog.</strong></p>
</div>
<div class="caps">
<p>The quick brown fox jumps over the lazy dog.</p>
<p><em>The quick brown fox jumps over the lazy dog.</em></p>
<p><strong>The quick brown fox jumps over the lazy dog.</strong></p>
</div>
</div>
<div class="font-container" id="roboto">
<h3>Roboto</h3>
This text will inherit from #roboto rules
<div class="normal">
<p>The quick brown fox jumps over the lazy dog.</p>
<p><em>The quick brown fox jumps over the lazy dog.</em></p>
<p><strong>The quick brown fox jumps over the lazy dog.</strong></p>
</div>
<div class="caps">
<p>The quick brown fox jumps over the lazy dog.</p>
<p><em>The quick brown fox jumps over the lazy dog.</em></p>
<p><strong>The quick brown fox jumps over the lazy dog.</strong></p>
</div>
</div>
<div class="font-container" id="lora">
<h3>Lora</h3>
This text will inherit from #lora rules
<div class="normal">
<p>The quick brown fox jumps over the lazy dog.</p>
<p><em>The quick brown fox jumps over the lazy dog.</em></p>
<p><strong>The quick brown fox jumps over the lazy dog.</strong></p>
</div>
<div class="caps">
<p>The quick brown fox jumps over the lazy dog.</p>
<p><em>The quick brown fox jumps over the lazy dog.</em></p>
<p><strong>The quick brown fox jumps over the lazy dog.</strong></p>
</div>
</div>
</div>
h3 {
font-family: Helvetica, sans-serif;
font-size: 24px;
}
p {
font-family: "Roboto", sans-serif;
}
.font-container {
display: inline-block;
width: 45%;
}
.caps {
text-transform: uppercase;
}
#helvetica{
font-family: 'Helvetica', sans-serif;
}
#roboto{
font-family: "Roboto", sans-serif;
}
#lora{
font-family: "Lora", serif;
}